[Elecraft] Normal KPA500 behavior?

[n5ge at n5ge.com]

Just a note about a situation I discovered after assembling my KPA500.

It is very easy to snag the fan voltage wires at the rear of the KPA500 when
installing the rear panel if you're not careful.  If it happens it will unplug
the power to the fan.  It happened to me, but I noticed the heat rising right
away and corrected it.

You have to be careful that you don't snag those wires during the rear panel
installation.

I don't think that is your problem, but thought I might mention it.

73,
Tom
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member

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On Fri, 10 Feb 2012 12:51:26 -0800, iain macdonnell - N6ML <ar at dseven.org>
wrote:

>On Fri, Feb 10, 2012 at 11:28 AM, Mike Walsh <ke5akl at yahoo.com> wrote:
>> My KPA500 does a couple of things that seem a bit odd.  Other KPA owners - do your KPAs also do the following?
>>
>> 1)  When I transmit a 500 watt carrier while displaying TEMP the displayed temperature drops 5 degrees C.  When I release the key the temperature goes immediately back to the real value.  Lower transmit power levels cause a correspondingly lower drop in displayed temp.  This behavior causes the temp display to bounce around while transmitting CW.
>
>This does NOT sound normal, and is something I think you should worry
>about right away. If the temp sensor is not functioning correctly, you
>could cause damage by not having the fans engage at the appropriate
>speeds, and over-temp protection mechanisms could fail to be invoked.
>
>Suggest contacting Elecraft support for guidance on this...
>
>    ~iain / N6ML
[snip]